Finding the Third Proportional to 21,465 and 34,470

Step by Step Solution

1. Step 1: Write the proportion equation
   21,465 : 34,470 = 34,470 : x
2. Step 2: Convert to fraction form
   21,465/34,470 = 34,470/x
3. Step 3: Cross multiply
   21,465x = 34,470 × 34,470
4. Step 4: Simplify right side
   21,465x = 1,188,180,900
5. Step 5: Solve for x
   x = 1,188,180,900/21,465
6. Step 6: Final answer
   x = 55,354.34